That sounds great. Did you use stock diameter piping? Do you know the part # of the magnaflow muffler?
2013 Focus ST3 - Performance Blue - MBRP 3" catback, Injen CAI, Cobb 93 tune
2013 Focus SE Black Package 5M - Tuxedo Black - K&N drop in w/snorkel delete, custom axle back exhaust with resonator delete